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Ivanshal [37]
3 years ago
11

Find the distance between points A and B, located on the opposite shores of a river, if on one of the shores following segments

have been drawn and measured SB=60m, SC=80m, SD=180m and BC∥AD.

Mathematics
1 answer:
Gre4nikov [31]3 years ago
4 0

Answer:

AB=75m

Step-by-step explanation:

In the \Delta SCB and \Delta SDA

\angle S=\angle S\\BC||AD\\\Rightarrow\angle SBC=\angle SAD\\\angle SCB =\angle SDA

By\ AAA\ \Delta\ and\ \Delta SDA\ are\ similar\\\\ \Rightarrow\frac{SC}{SD} =\frac{SB}{SA} \\\\ \frac{80}{180} =\frac{60}{SA}\\\\ SA=60\times\frac{180}{80} \\\\SA=135\\\\AB=SA-SB\\\\=135-60\\\\=75m

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IceJOKER [234]

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4 0
3 years ago
100 is divisible by which of the following numbers 2,3,4,5,6,9 or 10?
pochemuha
The correct answer is B: 2,4,5, 10

We know that 100 is not divisible by 3 because 100/3 is 33.33 repeating, which is an irrational number.

We also know that 100 is not divisible by 6 because 100/6 is 16.66 repeating which is also an irrational number.

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Hope this helps!
6 0
3 years ago
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r-ruslan [8.4K]

200 + \div 4 =
50
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5 0
3 years ago
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Darya [45]
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4 0
2 years ago
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goblinko [34]

Answer:

\large\boxed{\dfrac{24}{7}}

Step-by-step explanation:

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